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Lazarus Long Profile picture
@LazarusLong13
May 31, 2023 • 21 tweets • 12 min read • Read on X
Scrolly
Making the case for the #CorsiRosenthalBox with studies.

A simple thread.
"no U.S. Energy Star certified air cleaners have CADR values (for either tobacco smoke, dust, or pollen) matching the CADR value for the CR Box even on low speed "

On cost? 1/10th.

1019 to 1444 m3/hr CADR.

(600 to 850 ft3/min)

Published here:
tandfonline.com/doi/full/10.10… ImageImage
An incredibly thorough study published in February 2023, with all of its authors from @NIOSH.

With universal masking in a 3-ply cotton mask, exposure to the relevant aerosol size is reduced by 88 to 94%, with the #CorsiRosenthalBox.

73% w/ CRBox alone.

sciencedirect.com/science/articl… ImageImage
Very good thread on this study here:

Essentially the same NIOSH team investigated HEPA efficacy.

65% reduction with HEPA alone.

So, at a much cheaper price, the #CorsiRosenthalBox gets better results.

cdc.gov/mmwr/volumes/7…
But can HEPAs remove SARS-COV-2 from the air? Yes.

(Would #CorsiRosenthalBox do the same? Yes - faster and cheaper.

Has it been studied specifically for this? No. HEPAs barely have.

Do the same laws of physics apply? Yes.)

journals.asm.org/doi/full/10.11… Image
But can HEPAs really remove SARS-COV-2 from the air?

Yes - in a UK hospital, HEPAs were off. Cov1d was in the air. Turned on. No more CoV1d.

1000 m3/hour CADR.

Remember the first study?

1019 to 1444 m3/ hour for the CR box.

cuh.nhs.uk/news/air-filte…

academic.oup.com/cid/article/75… Image
@MarinaC_Dyb and her fellow authors found a massive reduction in aerosols in OCCUPIED classrooms using the #CorsiRosenthalBox. Also found that ALL of the air went in.

No wonder they have rolled them out to 400 locations.

Study is linked here:
indoorairquality.initiative.uconn.edu/testing-the-ef… Image
Oh for Pete's sake. @elonmusk has just killed another thread.

Let me add these manually.
"Also found that ALL of the air went in" - quoting above to go into a little more detail:

This answers, in a study, the concern that it just moves the air around. That it won't go into the filter.

It does, and this had to be pointed out.
The CDC, of which NIOSH is part of, has officially recommended 5 ACH, minimum, and that DIY Air Cleaners are effective at reducing the risk of transmission of Cov1d.

The #CorsiRosenthalBox is
specifically mentioned as part of that solution.

cdc.gov/coronavirus/20… ImageImageImage
@3M has studied it in their formal lab - and is officially on board:

news.3m.com/2022-02-24-3M-…
The famous UL, Inc testing the safety of the #CorsiRosenthalBox, to make sure it won't catch on fire.

It won't - even if the filters are loaded up.

(The link that is out on Twitter appears to be dead.)

ul.org/library/2988
"Does Using Corsi–Rosenthal Boxes to Mitigate COVID-19 Transmission Also Reduce Indoor Air Concentrations of PFAS and Phthalates?"

Yes.

pubs.acs.org/doi/10.1021/ac… Image
Some have expressed surprise that this was found.

Dr. Corsi explains:

And the rest of your family?

30 case studies- oops, 30 of your stories here, where your family used the #CorsiRi
A thesis - a study, that found 7 PFAs, and exposure to for both dog and human. (@ShellyMBoulder collaborated).
elischolar.library.yale.edu/ysphtdl/2161/ Image
How do we know that dogs are affected? Because it is dogs that get experimented on.

And not to get too personal, but my dog has stage 4 chronic kidney disease. CKD can be caused by PFAs.

Did I do that? Or at least not prevent it? A lot of

wunc.org/health/2021-05… Image
years with no air filtration.

But hey - she is 15 years old, and it could be just old age.

In any event, I don't want to go into any more detail, but now I know better.

But besides PFAs, dogs can catch Cov1d.

As can cats.

In fact, from the study, we should see our cat as part of our family regarding virus transmission.

Can a cat or dog wear a mask?

Yes, with training.

But what if you could reduce their risk of catching Cov1d without all that? Image
And the risk to the rest of your family?

30 case studies- oops, 30 of your stories here, where your family used the #CorsiRosenthalBox as the centerpiece of your family pandemic prevention protocol.

And it worked.

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More from @LazarusLong13

Lazarus Long Profile picture
Apr 28
I have a new thing to say to why I mask.

Ronald Reagan, Michael J Fox, Robin Williams, Lou Gehrig, Bruce Willis.

Alzheimer's, Parkinsons, Lew Body Dementia, ALS, CJD

All of them are dying or are dead from - the common cold.

You see,
One of the main viruses that results in the cold is a virus called OC43.

And it turns out that it's neuroinvasive - and is strongly associated with all of those diseases.

Even though it's just a cold in the beginning. So, those are 5 really bad diseases that I am protecting
myself from.

Kind of like HIV is often just like a cold or a mild case of flu in the beginning.

So, yeah, I mask so I don't catch a cold.

Or Covid - which is also neuroinvasive, and let me tell you all about the horrible things it does to your body much quicker....

(They
Read 7 tweets
Lazarus Long Profile picture
Apr 26
Safer showering and swimming with great breathability!

Others have used a snorkel w/ N95s - but those then collapse around the snorkel, and breathability is more restricted. This new approach is w/ an internal BRACE!

I took a shower with this, and it worked perfectly. Build 🧵 Image
This is a great technique, but I was looking for something with more breathability.

Image
This is the internal brace, and how the magic happens.

My subconscious must have picked this up from surgical mask braces that go under surgical masks.

So, here's the build. Image
Image
Read 27 tweets
Lazarus Long Profile picture
Apr 24
Got bored. Let's just check out Google Scholar and E Coli. Oh my. Oh my, that's not good.

Yes, yet another episode of "that's airborne, TOO?!!!!!"

THREAD
Pigs:
"Airborne E. coli were isolated from indoor air,....and downwind air samples (10, 50, 100, 200 and 400 m away) for five swine houses" (1)

Cows:
"E. coli was isolated in both inside and outside air, even in samples taken 150 m from the farm." (2)

READY FOR THE FUN ONES?
Restaurants:
"E coli was identified as the most prevalent illness-causing bacteria in Zone A-derived aerosols (721 CFU)"
(3)
Hospital:
"The results also showed that airborne bacterial pathogens were present in all the sampled hospital wards." (4)

Ready for another fun one?
Read 6 tweets
Lazarus Long Profile picture
Apr 21
Pope Francis passed - R.I.P.

He died from not masking.

Not masking led him to getting polymicrobial respiratory infection (multiple pathogens) on 2/6/2025, leading to bronchitis, to bilateral pneumonia, a respiratory event
- leading to stroke and cardiac arrest.
Timeline here:
cbsnews.com/news/pope-fran…

History of respiratory challenges.
cbsnews.com/news/pope-fran…

And here showing every year lately having "respiratory infections."
usatoday.com/story/life/hea…
Why didn't he mask? The peer pressure must have been enormous. Even those who know better often don't mask out of fear of social castigation.

And that's why mask mandates work so well. They allow people to mask if they want to.

And those who don't want to? Won't. But...
Read 4 tweets
Lazarus Long Profile picture
Apr 20
Save this QR Code to your phone or save this tweet. Save it for the next time you get harassed by an antimasker.

This links to the article from March 27th, 2025, with Trump saying it was so nice of a reporter to be wearing a mask.

There's a video of him on this page.

/1 QR Code to https://web.archive.org/web/20250327191931/https://www.mediaite.com/news/trump-singles-out-reporter-for-wearing-mask-in-oval-office-you-feel-more-comfortable-right/
President Donald Trump stopped answering San Francisco Chronicle Washington correspondent Shira Stein, @shiramstein, to comment on her wearing a COVID mask in the Oval Office, remarking, “You’re wearing a mask! So nice of you!” SHIRA STEIN: Mr. President, you said you want to return education control to the states, how would you handle it if a state like California were to put in place education policies that you don’t agree with? PRESIDENT DONALD TRUMP: You know, I haven’t seen a mask in so long! You’re wearing a mask! So nice of you! I haven’ seen anybody wearing a mask in a long time. It’s good. You feel more comfortable, right? SHIRA STEIN: Yes. PRESIDENT DONALD TRUMP: Good. That’s good. So go ahead. SHIRA STEIN: You said you want to return education control to the states. How would you handle it if a sta...
Our faces, our health.

And we choose to mask.

Ms. Stein was later singled out by Marjorie Taylor Greene in her for wearing a mask.

Very insulting, at first. But, after Ms. Stein pointed out she was immuncompromised (also having had a stroke, higher risk), she
Read 9 tweets
Lazarus Long Profile picture
Apr 18
Trump is trying to distract from the economy. He just pumped out the Lab Leak from the official whitehouse.gov website.

Simultaneously making masking advocacy both more difficult and easier.

The Shrodinger Presidency. If only he had.... /+

whitehouse.gov/lab-leak-true-…
Of course I don't wish him dead in a box. That is against Twitter's TOS.

But, anyway, what do I mean? On the one hand, pointing out that Covid is probably a bioweapon means that you can point out the silliness of not protecting yourself against it.

On the other hand, this: Image
Which, of course, is silly as workers in BSL2-4 labs wear N95s and better to protect against bioweapons.

Heh. I can tell an antimasker wrote that because they screwed up the logic on it.

Mask mandates do NOT equate masks.
Read 6 tweets

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